The tip of the nose usually tingles due to allergies or a cold or flu, to signalling the need to sneeze. Known as paresthesia, symptoms are often indicative of sensory nerve damage, disease or injury, according to medical experts at Right Diagnosis.
The cause is dependent on the exact location of the tingling/numbness. This is often due to nerve entrapment or pressure applied directly to a nerve or its spinal attachment. Diseases or conditions adversely affecting the nerves like neuropathy, diabetic neuropathy, multiple sclerosis and diabetes may also affect the nerves and cause the nose to tingle, according to Right Diagnosis.